This is my grandson's favorite part of Advent! We have gotten him one of the Lego Advent calendars for the last three years and this one has been just as big a hit as last year. If you have a lego nut in your house you must get one of these

Get ready to launch! Your bathroom will become a mighty wet rocket ship. This thing shimmies and shakes and sounds like your basement dehumidifier water pump (the cheap one)!